Best Free Interior Design Apps of 2026

Planner 5D is one of the most established names for people who want to map a room layout before decorating it. The app is best known for its drag-and-drop floor plans, 2D and 3D viewing modes, and a beginner-friendly interface that makes it easier to place walls, furniture, and decor than in pro CAD tools. It fits users who want to think through room size, traffic flow, and furniture placement first, then explore finishes and styling after the plan feels right. The free version is useful for basic planning, though some catalog items and more advanced options sit behind paid tiers. If your project starts with measuring a room and testing different arrangements, Planner 5D remains one of the strongest free home design app choices on the market.

Homestyler stands out for people who want a fuller room-planning toolkit with a strong visual side. Built around floor planning, furnishing, and styled interiors, it gives beginners a way to sketch a room, add furniture, and explore design ideas that feel closer to a finished space than a simple wireframe. It is especially helpful when you want to test complete room concepts, because the app combines layout work with a broad object library and community-shared inspiration. The free tier gives you a solid entry point, although premium features and higher-end assets are reserved for paid plans. Homestyler is a smart pick when you want more control than a photo makeover tool gives, but still want an approachable interface compared with traditional 3D design software.

HomeByMe is a strong option when a single room project turns into a larger home planning job. The platform focuses on building rooms and homes with accurate layouts, then furnishing them with branded and generic items so you can test how spaces work before making purchases. That makes it useful for renovations, moves, or anyone comparing several rooms at once instead of redesigning only a bedroom or living room. Its interface is cleaner than many old-school planning tools, and the staged results are easier for non-designers to understand and share. The free level is enough to evaluate the product, but project limits and premium outputs are part of the paid model. Choose HomeByMe if your decision starts with layout and shopping logic, not just a quick visual makeover.

Home Design 3D has stayed popular because it keeps room planning accessible on phones and tablets, not just desktop screens. The app lets you draw rooms, edit walls, place furniture, and switch into a 3D view, which makes it useful for people who want to sketch ideas casually instead of sitting down with a complex desktop program. It works well for early-stage planning, especially when you are testing dimensions and seeing whether a new bed, sofa, or dining layout fits a real room. Its strength is speed and portability rather than polished, AI-led restyling from a photo. The free experience helps you get familiar with the workflow, while fuller project control comes with paid options. For mobile-first users, it remains one of the more practical room design apps to try.

SketchUp Free is the strongest free choice here if you want full 3D control and are willing to trade simplicity for precision. Known for architecture, woodworking, and interior planning, SketchUp lets you build custom room models in a browser and shape spaces with much more freedom than beginner décor apps usually offer. That flexibility makes it valuable for remodelers, design students, and hands-on planners who need exact geometry rather than quick inspiration. The trade-off is a steeper learning curve, because SketchUp asks you to model a space instead of instantly redesigning it from a photo. Its free version is real and useful, but it is better described as entry-level professional software than a casual virtual room makeover app. Pick SketchUp Free when measurements and custom construction matter more than fast style previews.

Canva is not a full room planner, but it deserves a spot because many people use it in the design process before they buy anything. Its free plan is widely used for mood boards, palette planning, furniture collages, and side-by-side concept presentations, which makes it especially useful when you need to explain a style direction to a partner, roommate, or contractor. Canva helps with the communication part of interior design more than the spatial part, so it pairs well with apps that handle room layouts or photo redesigns. The interface is easier than almost every dedicated design platform on this list, and the template library lowers the barrier even more. Use Canva when your main job is organizing ideas and presenting a room vision clearly, not rebuilding the room in 3D.

IKEA Kreativ is most useful when your redesign is tied directly to furniture shopping. The tool is built to help you visualize IKEA pieces in your own room, so it bridges inspiration and buying better than many general design apps do. That makes it practical for renters, first-home owners, and anyone refreshing a room without planning a full renovation. Its biggest strength is context, because it focuses on your actual space rather than asking you to imagine how a catalog sofa might look at home. The limitation is equally clear: the ecosystem is centered on IKEA’s product range, so it is not the broadest tool for style exploration across brands and materials. Choose IKEA Kreativ when furnishing decisions are the main question and retailer-specific visualization is a plus, not a drawback.

RoomGPT became popular because it offers one of the simplest AI redesign flows in the category: upload a room photo, select a room type and style, and get a new look back quickly. That makes it appealing for users who care more about instant inspiration than detailed floor planning or furniture accuracy. It is best treated as a visual ideation tool, because its core value is speed and variety rather than precise renovation planning. People often use it to test broad directions such as modern, coastal, or minimalist before moving to a more detailed app for implementation. Free access has varied over time, so what you can do without paying may change. Try RoomGPT if you want a lightweight way to spark ideas from a photo and compare a few different design moods.